Agitating means with air chamber and reciprocating pistons



Oct. 12, 1965 s. LASZLO AGITATING MEANS WITH AIR CHAMBER AND RECIPROCATING PISTONS Filed Sept. 9, 1965 4 Sheets-Sheet 1 INVENTOR.

STEVE LASZLO S. LASZLO Oct. 12, 1965 AGITATING MEANS WITH AIR CHAMBER AND RECIPROCATING PISTONS 4 Sheets-Sheet 2 Filed Sept. 9, 1963 INVENTOR. STEVE LASZLO S. LASZLO Oct. 12, 1965 AGITATING MEANS WITH AIR CHAMBER AND RECIPROCATING PISTONS 4 Sheets-Sheet 3 Filed Sept. 9, 1953 INVENTOR.

STEVE LASZLO 7 Arm/4mm;

S. LASZLO Oct. 12, 1965 AGII'ATING MEANS WITH AIR CHAMBER AND RECIPROCATING PISTONS 4 Sheets-Sheet 4 Filed Sept. 9, 1955 INVENTOR. x STEVE LASZLO 28 B s A7'7'0P/V15'W United States Patent 3,211,435 AGITATING MEANS WITH AIR CHAMBER AND RECIPROCATING PISTONS Steve Laszlo, Astoria, N.Y. (84-13 Queens Blvd, Elmhurst 73, N.Y.) Filed Sept. 9, 1963, Ser. No. 307,598 15 Claims. (Cl. 259139) This invention is for a hydraulic motor device and more particularly concerns a novel fluid agitator.

According to the invention there is provided a device which has one or more fluid-tight air chambers which render the device buoyant. The device can be immersed in a tank or body of liquid to be agitated. The device includes a cylindrical body having a plurality of circumferentially spaced fixed hollow cylinders in which are reciprocatable pistons. The pistons have shafts which are engaged at one end in an eccentric cam track. The cylinders are attached to a rotatable axial shaft in the cylindrical body so that the pistons reciprocate while the cylindrical body rotates with the axial shaft to agitate the liquid in which the device is immersed.

In another form of the device a plurality of reciprocatable cylinders are provided in place of the pistons. The reciprocatable cylinders have shafts engaged at one end in the eccentric cam track. While the cylinderical body rotates with the axial shaft the reciprocating cylinders agitate the liquid in which the device is immersed.

In still another form of the device a plurality of cam tracks are provided spaced apart axially of the cylindrical body, with a plurality of reciprocatable cylinders associated with each cam track.

It is therefore one object of the invention to provide a buoyant hydraulic fluid agitation device.

Another object is to provide a buoyant hydraulic motor in which a rotatable cylindrical body carries a plurality of circumferentially spaced cylinders in which are pistons which reciprocate under guidance of an eccentric cam track while the cylindrical body revolves.

A further object is to provide a buoyant hydraulic device in which a rotatable cylindrical body carries a plurality of circumferentially spaced fixed cylinders in which are reciprocatable cylinders moving between guide plates under guidance of an eccentric cam track while the cylindrical body rotates.

Still another object is to provide a buoyant hydraulic device in which a rotatable cylindrical body carries a plurality of groups of circumferentially spaced fixed cylinders, the groups being spaced apart axially of said body, with reciprocatable cylinders in the fixed cylinders I moving axially thereof under guidance of eccentric cam tracks spaced apart axially of said body while said body rotates.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIG. 1 is a side elevational view of the device shown immersed in a tank of liquid, the tank being shown in vertical section.

FIG. 2 is a cross-sectional view on an enlarged scale taken on line 2-2 of FIG. 1.

FIG. 3 is a longitudinal sectional view taken on lines 33 of FIG. 2.

FIG. 4 is a fragmentary sectional view on a further enlarged scale of structural details shown on a reduced scale in FIG. 3.

FIG. 5 is a perspective view of a cylindrical body with associated shaft and reciprocatable cylinders.

3,211,435 Patented Oct. 12, 1965 FIG. 6 is a sectional view similar to FIG. 2 showing a device including the body of FIG. 5.

FIG. 7 is a sectional view similar to FIG. 3, taken on line 7-7 of FIG. 6.

FIG. 8 is an exploded perspective view of guide plates employed for the reciprocatable cylinders.

FIG. 9 is an edgewise elevational view of the guide plates of FIG. 8.

FIG. 10 is a perspective view of another cylindrical body with associated reciprocatable cylinders and axial shaft.

Referring first to FIGS. l-4 of the drawings, there is shown the device 10 including a hollow cylindrical casing or body 12 which contains air in a first cavity C1. A cylindrical shaft 14 passes axially through the body 12 and secured to circular end walls 16 of the cylindrical body 12. A second cylindrical casing or body 18 surrounds the first casing 12 and defines a second air cavity or chamber C2. Annular end walls 20 of casing 18 are sealed as by welding to ends of casing 12. A plurality of holes 21 are formed in circumferentially spaced array in the side wall of casing 18. Secured in these holes and extending radially of chamber C2 are hollow cylinders 22. These cylinders have closed inner ends 23 and open outer ends. Circular pistons 24 are movable axially in the cylinders 22. End walls 23 of cylinders 22 are connected by radial shafts 25 to shaft 14. Thus as shaft 14 rotates, the casings 12 and 18 and cylinders 22 rotate. The pistons 24 are connected to ends of piston shafts 26. The shafts 25, 26 extend axially of the cylinders 22 and radially of shaft 14. Each of the shafts 26 terminates in a ball 28 which is engaged in a cam track 30.

The cam track has an eccentric configuration and extends around the outer casing 18 in a central plane thereof. Outer annular wall 32 of the cam track is attached by radially extending bars 33 of different lengths to axially extending bars 34. The bars 34 are attached at their ends to a pair of circular end walls 36, 38. The walls 36, 38 and bars 34 define a generally cylindrical cage in which the open ends of cylinders 22 and outer sides of pistons 24 are exposed to the liquid L which fills tank T. The cam track has spaced side walls 39 with inturned annular edges 40 defining a slot 41 through which pass shafts 25.

Due to the inner and outer air chambers C1, C2, the device 10 is buoyant and floats in the liquid. Shaft 14 is secured to inner ball bearing races 35 rotating in outer races 37 secured on end walls 36, 38.

Motor 42 is mounted on end wall 36 and may be connected by a suitable power cable 43 to a remote power source. End wall 38 may be thicker than end wall 36 to balance the weight of motor 42. Since the device is symmetrical with respect to its central axis, it will float in the liquid L with either the end wall 38 lowermost and horizontal or with end wall 36 lowermost and horizontal. A preferred arrangement, however, is that shown in the drawings wherein the axis of the device is horizontal.

As the motor 42 drives shaft 14, the cylindrical casings 12 and 18 will rotate. The piston shafts 26 will reciprocate as the balls 28 and shafts 26 move around the eccentric cam track. This will cause the pistons 24 to move in and out axially of the cylinders 22 and perpendicularly to the registering axes of the cylindrical casings 12, 18 and shaft 14. The pistons 24 will agitate liquid L.

The device can be turned on its axis to apply maximum agitation at any level of the liquid. It will be noted that the cam track has two outer generally circular courses or sections L1 and L2 of greater and lesser diameter, respec tively, and connected by two oblique rather short. straight sections S1, S2 on opposite sides of the device; see FIG. 2. Thus the axial movements of the pistons 24 take place only during the passage of the shafts 26 and balls 28 along these straight sections. The movements of the pistons are rather rapid since the angular extent of the sections S1, S2 is rather short circumferentially of the device as compared with the longer sections L1, L2.

The device thus embodies an improved form of hydraulic motor in which buoyancy is provided, and by rotation of the device to selected positions agitation at selective levels can be accomplished in the liquid in which the device is immersed.

In FIGS. 5-9 is shown another device which is similar to the device 10 and corresponding parts are identically numbered. The device 10 has three cam tracks 30 30 and 30. Cam track 30* is centrally located around the outer cylinder 18. Tracks 30 and 30 are spaced apart from track 30 axially of the casing or cylinder 18'. Set in holes 21 in cylinder 18' are a plurality of groups of fixed cylinders 22. The groups of fixed cylinders 22 receive axially reciprocatable cylinders 24. Outer circular ends 31 of the cylinders 24- have holes 29 for passing liquid therethrough. Attached to the end walls 31 are rods or shafts 26' with balls 28 at their ends. The balls are slidably engaged in the cam tracks Mi -30. A pair of flanged annular guide plates 50, 50 is provided for each group of cylinders 24'. These plates, as clearly shown in FIGS. 79, have outwardly extending flanges 52 which can be secured to the outer side of cylinder 18'. Inwardly turned flanges 54 are provided at the peripheries of the annular plates. Each pair of plates 50 50 serves as guide means for the reciprocating cylinders 24'. Shafts 26' pass between the spaced opposing flanges 54.

As the shaft 14 is rotated, the cylinders 12 and 18 rotate and cylinders 24' reciprocate axially as the shafts 26 engaged on the cam tracks 30*, 30 and 30 move in and out.

Instead of three cam tracks, a single cam track may be used and a single set or group of pistons 24" may be provided as shown in FIG. 10. These pistons may be rectangular, oval or circular. Pistons 24" will reciprocate in the fixed housing 22' set in outer cylinder 18" surrounding inner cylinder 12". Other parts of FIG. 10 corresponding to those of devices 10 and 10 are identically numbered.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent 1. A hydraulic liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially through said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders having ends open radially outward of the shaft and casing, said cylinders being circumferentially spaced around said casing, pistons for agitating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, and means rotatably supporting said main shaft while supporting said cam track in a fixed position with respect to the rotating main shaft.

2. A hydraulic liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially of the casing, means sealing said shaft at opposite ends of the casing to define a leakproof air chamber in said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders having ends open radially outward of the shaft and easing, said cylinders being circumferentially spaced around said casing, pistons for agitating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, and means rotatably supporting said main shaft while supporting said cam track in a fixed position with respect to the rotating main shaft.

3. A hydraulic liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially through said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders having ends open radially outward of the shaft and casing, said cylinders being circumferentially spaced around said casing, pistons for agitating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, means defining an open cylindrical cage, support means securing said cam track in a fixed position in said cage, and bearing means supporting said main shaft and casing for rotation within said cage and cam track.

4. A hydraulic liquid agitation device, comprising a closed first cylindrical casing, a main shaft extending axially of the casing, means sealing said shaft at opposite ends of the casing to define a leakproof air chamber in said casing, motor means for rotating said shaft, a second closed cylindrical casing surrounding the first-named casing and sealed thereto to define a leakproof second air chamber therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders extending radially of the second casing and having outer ends open outside of said second casing, said cylinders being circumferentially spaced around the first-named casing, pistons for agitating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said second casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, and means rotatably supporting said main shaft while supporting said cam track in a fixed position with respect to the rotating main shaft.

5. A hydraulic liquid agitation device, comprising a closed first cylindrical casing, a main shaft extending axially of the casing, means sealing said shaft at opposite ends of the casing to define a leakproof air chamber in said casing, motor means for rotating said shaft, a second closed cylindrical casing urrounding the first-named casing and sealed thereto to define a leakproof second air chamber therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders extending radially of the second casing and having outer ends open outside of said second casing, said cylinders being circumferentially spaced around the first-named casing, pistons for agitating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, means defining an open cylindrical cage, support means securing said cam track in a fixed position in said cage, and bearing means supporting said main shaft and both casings for rotation within said cage and cam track.

6. A hydraulic liquid agitation device, comprising a closed first cylindrical casing, a main shaft extending axially of the casing, means sealing said shaft at opposite ends of the casing to define a leakproof air chamber in said casing, motor means for rotating said shaft, a second closed cylindrical casing surrounding the first-named casing and sealed thereto to define a leakproof second air chamber therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders extending radially of the second casing and having outer ends open outside of said second casing, said cylinders being circumferentially spaced around the first-named casing, pistons for agitating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, a pair of opposed circular end walls joined by a plurality of circumferentially spaced bars defining an open cylindrical cage for circulation of liquid therethrough, other bars connecting said cam track to the firstnamed bars respectively for supporting said cam track in a fixed position in said cage, and bearing means on said end walls supporting said main shaft and both cas ings for rotation within said cage and cam track.

7. A hydraulic liquid agitation device, comprising a closed first cylindrical casing, a main shaft extending axially of the casing, means sealing said shaft at opposite ends of the casing to define a leakproof air chamber in said casing, motor means for rotating said shaft, a second closed cylindrical casing surrounding the first-named casing and sealed thereto to define a leakproof second air chamber therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders extending radially of the second casing and having outer ends open outside of said second casing, said cylinders being circumferentially spaced around the first-named casing, pistons for agitating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, a pair of opposed circular end walls joined by a plurality of circumferentially spaced bars defining an open cylindrical cage for circulation of liquid. therethrough, other bars connecting said cam track to the first-named bars respectively for supporting said cam track in a fixed position in said cage, and bearing means on said end Walls supporting said main shaft and both casings for rotation within said cage and cam track, one of said end walls being more massive than the other end wall, said motor means for rotating the main shaft being mounted on said other end wall and being balanced by the greater mass of said one end Wall.

8. A hydraulic liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially through said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders having ends open radially outward of the shaft and casing, said cylinders being circumferentially spaced around said casing, pistons for agitating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, a pair of opposed circular end walls joined by a plurality of circumferentially spaced bars defining an open cylindrical cage for circulation of liquid therethrough, other bars connecting said cam track to the firstnamed bars respectively for supporting said cam track in a fixed position in said cage, and bearing means on said end walls supporting said main shaft and said casing for rotation within said cage and cam track.

9. A hydraulic liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially through said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders having ends open radially outward of the shaft and easing, said cylinders being circumferentially spaced around said casing, pistons for agi tating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, a pair of opposed circular end Walls joined by a plurality of circumferentially spaced bars defining an open cylindrical cage for circulation of liquid therethrough, other bars connecting said cam track to the firstnamed bars respectively for supporting said cam track in a fixed position in said cage, bearing means on said end Walls supporting said main shaft and said casing for rotation within siad cage and cam track,- said motor means being mounted on one of said end walls, and means connected to said motor means for energizing the same from a remote point.

10. A hydraulic-liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially through said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable therewith, said cylinders having ends open radially outward of the shaft and casing, said cylinders being circumferentially spaced around said casing, pistons for agitating liquid movable axially in the cylinders, piston shafts secured to the pistons respectively and extending out of the open ends of the cylinders, an endless eccentric cam track encircling said casing, outer ends of said piston shafts being slidably engaged on the cam track for reciprocating axially of the cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, a pair of opposed circular end walls joined by a plurality of circumferentially spaced bars defining an open cylindrical cage for circulation of liquid therethrough, other bars connecting said cam track to the firstnamed bars respectively for supporting said cam track in a fixed position in said cage, bearing means on said end walls supporting said main shaft and said casing for rotation within said cage and cam track, said motor means being mounted on one of said end walls, and means connected to said motor means for energizing the same from a remote point, the other of said end Walls being more massive than said one end wall to balance the weight of said motor means on said one end wall.

11. A hydraulic liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially through said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of hollow cylinders axially disposed perpendicularly to said shaft and rotatable therewith, said cylinders having ends open radially outward of said shaft and casing, said cylinders being fixed in place and circumferentially equally spaced around the casing, axially reciprocatable other cylinders slidably disposed in the fixed cylinders respectively for agitating said liquid, rods secured to outer ends of the other cylinders respectively and extending outwardly axially thereof, an endless eccentric cam track encircling said casing, outer ends of said rods being slidably engaged on the cam track for axially reciprocating said other cylinders at certain sections of the cam track as said main shaft rotates with respect to the cam track, and means rotatably supporting said main shaft while supporting said cam track in a fixed position with respect to the rotating main shaft.

12. A hydraulic liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially through said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of hollow cylinders axially disposed perpendicularly to said shaft and rotatable therewith, said cylinders having ends open radially outward of said shaft and casing, said cylinders being fixed in place and circumferentially equally spaced around the casing, axially reciprocatable other cylinders slidably disposed in the fixed cylinders respectively for agitating said liquid, rods secured to outer ends of the other cylinders respectively and extending outwardly axially thereof, an endless eccentric cam track encircling said casing, outer ends of said rods being slidably engaged on the cam track for axially reciprocating said other cylinders at certain sections of the cam track as said main shaft rotates with respect to the cam track, a pair of annular guide plates secured to said casing and disposed on opposite sides of said other cylinders for guiding the same during reciprocation, and means rotatably supporting said main shaft while supporting said cam track in a fixed position with respect to the rotating main shaft.

13. A hydraulic liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially through said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of groups of hollow cylinders axially disposed perpendicularly to said shaft and rotatable therewith, said cylinders having ends open radially outward of said shaft and easing, said cylinders being fixed in place in the casing, said groups being spaced apart axially of said casing with a number of said cylinders in each group, the cylinders in each group being circumferentially spaced around the casing, axially reciprocatable other cylinders slidably disposed in the fixed cylinders respectively for agitating said liquid, rods secured to apertured outer ends of the other cylinders respectively and extending outwardly axially thereof, a plurality of eccentric cam tracks encircling said casing,

said cam tracks being spaced apart axially of the casing and coplanar with axes of the fixed and reciprocatable cylinders, outer ends of said rods being slidably engaged on the cam track for axially reciprocating said other cylinders at certain sections of the cam tracks as the main shaft rotates with respect to the cam tracks, a plurality of pairs of annular guide plates secured to said casing, each pair of said plates being disposed on opposite sides of a different group of reciprocatable cylinders for guiding the same in axial movement, and means rotatably supporting said main shaft While supporting said cam tracks in a fixed position with respect to the rotating main shaft.

14. A hydraulic liquid agitation device, comprising a closed cylindrical casing, a main shaft extending axially through said casing, means for rotating said shaft so that the casing rotates therewith, a plurality of groups of hollow cylinders axially disposed perpendicularly to said shaft and rotatable therewith, said cylinders having ends open radially outward of said shaft and casing, said cylinders being fixed in place in the casing, said groups being spaced apart axially of said casing with a number of said cylinders in each group, the cylinders in each group being circumferentially spaced around the casing, axially reciprocatable other cylinders slidably disposed in the fixed cylinders respectively for agitating said liquid, rods secured to apertured outer ends of the other cylinders respectively and extending outwardly axially thereof, a plurality of eccentric cam tracks encircling said casing, said cam tracks being spaced apart axially of the casing and coplanar with axes of the fixed and reciprocatable cylinders, outer ends of said rods being slidably engaged on the cam track for axially reciprocating said other cylinders at certain sections of the cam tracks as the main shaft rotates with respect to the cam tracks, and means rotatably supporting said main shaft While supporting said cam tracks in a fixed position with respect to the rotating main shaft.

15. A hydraulic liquid agitation device, comprising a closed first cylindrical casing defining a first air chamber, a main shaft extending axially of said casing, motor means for rotating said shaft, a second closed cylindrical casing surrounding the first casing and sealed thereto to define a second air chamber, a plurality of hollow cylinders axially disposed perpendicular to said shaft and rotatable with both casings, said cylinders extending radially of the second casing and having outer ends open outside of said second casing, said cylinders being circumferentially spaced around the first casing, axially reciprocatable other cylinders axially disposed in the first-named cylinders, rods .secured to outer apertured ends of said other cylinders, an

endless eccentric cam track encircling said second casing, outer ends of said rods being slidably engaged on the cam track for axially reciprocating said other cylinders at certain sections of the cam track as the main shaft rotates with respect to the cam track, and means rotatably supporting said main shaft while supporting said cam track in a fixed position with respect to the rotating main shaft.

References Cited by the Examiner UNITED STATES PATENTS 2,994,516 8/61 Pelkowski 259l39 WALTER A. SCHEEL, Primary Examiner. 

1. A HYDRAULIC LIQUID AGITATION DEVICE, COMPRISING A CLOSED CYLINDRICAL CASING, A MAIN SHAFT EXTENDING AXIALLY THROUGH SAID CASING, MEANS FOR ROTATING SAID SHAFT SO THAT THE CASING ROTATES THEREWITH, A PLURALITY OF HOLLOW CYLINDERS AXIALLY DISPOSED PERPENDICULAR TO SAID SHAFT AND ROTATABLE THEREWITH, SAID CYLINDERS HAVING ENDS OPEN RADIALLY OUTWARD OF THE SHAFT AND CASING, SAID CYLINDERS BEING CIRCUMFERENTIALY SPACED ARROUND SAID CASING, PISTONS FOR AGITATING LIQUID MOVABLE AXIALLY IN THE CYLINDERS, PISTON SHAFTS SECURED TO THE PISTONS RESPECTIVELY AND EXTENDING OUT OF THE OPEN ENDS OF THE CYLINDERS, AN ENDLESS ECCENTRIC CAM TRACK ENCIRCLING SAID CASING, OUTER ENDS OF SAID PISTON SHAFTS BEING SLIDABLY ENGAGED ON THE CAM TRACK FOR RECIPROCATING AXIALLY OF THE CYLINDERS AT CERTAIN SECTIONS OF THE CAM TRACK AS THE MAIN SHAFT ROTATES WITH RESPECT TO THE CAM TRACK, AND MEANS ROTATABLY SUPPORTING SAID MAIN SHAFT WHILE SUPPORTING SAID CAM TRACK IN A FIXED POSITION WITH RESPECT TO THE ROTATING MAIN SHAFT. 